(19)

(11)

EP 0 034 173 A1

(12)

(43) Date of publication: 26.08.1981 Bulletin 1981/34 (21) Application number: 80901747.0 (22) Date of filing: 13.08.1980

(51) International Patent Classification (IPC):  A01G 3/ 08( . ) A01D 34/ 73( . ) (86) International application number: PCT/US1980/001027 (87) International publication number: WO 1981/000337 (19.02.1981 Gazette 1981/05)

(84) Designated Contracting States: FR (30) Priority: 13.08.1979 US 19790067148 (71) Applicants: FELDMAN, Robert I. Agoura, CA 91301 (US) THESMAN, Dana F. Torrance, CA 90510 (US)	(72) Inventors: FELDMAN, Robert I. Agoura, CA 91301 (US) THESMAN, Dana F. Torrance, CA 90510 (US) (74) Representative: Rinuy, Guy, et al  Cabinet Rinuy et Santarelli 14, Avenue de la Grande Armée F-75017 Paris F-75017 Paris (FR)